*.window.out

This files save the counted photon number at 4 side walls. The size of sidewall is defined by $Light_intensity_region_TBLR.

 do i=1,Nstatistic
    Top_surface_x(i), Top_surface_photon_counts(i), &
    Bottom_surface_x(i),  Bottom_surface_photon_counts(i), &
    left_surface_y(i), left_surface_photon_counts(i), &
    right_surface_y(i), right_surface_photon_counts(i)
 end do